diff --git a/cypress/integration/1_detectors.spec.js b/cypress/integration/1_detectors.spec.js
index 609615dc6..47e8e35f0 100644
--- a/cypress/integration/1_detectors.spec.js
+++ b/cypress/integration/1_detectors.spec.js
@@ -115,6 +115,7 @@ const validatePendingFieldMappingsPanel = (mappings) => {
 const fillDetailsForm = (detectorName, dataSource) => {
   getNameField().type(detectorName);
   getDataSourceField().selectComboboxItem(dataSource);
+  getDataSourceField().blur();
   getLogTypeField().selectComboboxItem(cypressLogTypeDns);
   getLogTypeField().blur();
 };
@@ -371,7 +372,7 @@ describe('Detectors', () => {
       getDataSourceField().selectComboboxItem(cypressIndexWindows);
       getDataSourceField().focus().blur();
 
-      cy.get('.euiCallOut')
+      cy.get('[data-test-subj="define-detector-diff-log-types-warning"]')
         .should('be.visible')
         .contains(
           'To avoid issues with field mappings, we recommend creating separate detectors for different log types.'
diff --git a/public/pages/CreateDetector/components/DefineDetector/components/DetectorDataSource/DetectorDataSource.tsx b/public/pages/CreateDetector/components/DefineDetector/components/DetectorDataSource/DetectorDataSource.tsx
index 8c6539e37..10fdef34f 100644
--- a/public/pages/CreateDetector/components/DefineDetector/components/DetectorDataSource/DetectorDataSource.tsx
+++ b/public/pages/CreateDetector/components/DefineDetector/components/DetectorDataSource/DetectorDataSource.tsx
@@ -177,6 +177,7 @@ export default class DetectorDataSource extends Component<
             <EuiCallOut
               title="The selected log sources contain different log types"
               color="warning"
+              data-test-subj={'define-detector-diff-log-types-warning'}
             >
               <EuiTextColor color={'default'}>
                 To avoid issues with field mappings, we recommend creating separate detectors for